1.	Simplify 1 Simplify the following expression: $$ \left(3 - 4 - 3\times5\right)2(-(-6)) $$ Correct Answer $$ -192$$ or -192.000

2.	Simplify 2 Simplify the following expression: $$ {\left(\frac{-5}{-3}\right)}^{2} - \left(-1 - -6\right)\left(-6 - -5\right) $$ Correct Answer $$ {\left(\frac{5}{3}\right)}^{2} + 5$$ or 7.77778

3.	Fractions 1 Simplify the following expression: $$ \frac{5}{6} + \frac{-4}{3} $$ Correct Answer $$ \frac{-1}{2}$$ or -0.4999999999999999

4.	Fractions 2 Simplify the following expression: $$ \frac{\frac{-4}{3}}{\frac{4}{6}} $$ Correct Answer $$ -2$$ or -2.0

5.	Significant figures 1. Write the following to 4 significant figures: 2554.4309 Correct Answer 2554 or $$2.554\times10^{3}$$ 2. Write the following to 4 significant figures: 0.00036216818 Correct Answer 0.0003622 or $$3.622\times10^{-4}$$

6.	Standard Form 1. Write the following in standard form to 2 significant digits: 0.0458605 Correct Answer $$4.6\times10^{-2}$$ 2. Write the following in standard form to 3 significant digits: 23324.9 Correct Answer $$2.33\times10^{4}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 5173 Correct Answer $$5.2\times10^{3}$$ 2. Write the following in preferred standard form to 5 significant digits: 3969.77 Correct Answer $$3.9698\times10^{3}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{(-(-5)) - \left(5 + -2\right)}{{\left(6 - -3\right)}^{2}} $$ Correct Answer $$ \frac{2}{81}$$ or 0.0246914

9.	Simplify 1 Simplify the following expression: $$ \left(-2 - 5 - 1(-5)\right)2\times3(-2) $$ Correct Answer $$ 24$$ or 24.0000

10.	Simplify 2 Simplify the following expression: $$ \frac{\frac{-6}{-6} + 2 - -1}{{\left(\frac{4}{-3}\right)}^{2}} $$ Correct Answer $$ \frac{9}{4}$$ or 2.25000